Hopper: java.lang.ClassCastException: <unknown> cannot be cast to [B

java.lang.ClassCastException: <unknown> cannot be cast to [B
	at java.awt.image.ComponentColorModel.getAlpha(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGB(Unknown Source)
	at java.awt.image.BufferedImage.getRGB(Unknown Source)
	at bip.a(SourceFile:111)
	at bip.a(SourceFile:90)
	at bip.a(SourceFile:78)
	at bif.a(SourceFile:45)

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 9/20/13 8:14 AM
Description: Registering texture

java.lang.ClassCastException: <unknown> cannot be cast to [B
	at java.awt.image.ComponentColorModel.getAlpha(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGB(Unknown Source)
	at java.awt.image.BufferedImage.getRGB(Unknown Source)
	at bip.a(SourceFile:111)
	at bip.a(SourceFile:90)
	at bip.a(SourceFile:78)
	at bif.a(SourceFile:45)
	at bim.a(SourceFile:69)
	at bim.a(SourceFile:37)
	at avo.d(SourceFile:444)
	at avo.a(SourceFile:339)
	at awg.a(SourceFile:274)
	at avn.a(SourceFile:263)
	at bfe.b(SourceFile:718)
	at atv.S(SourceFile:686)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at java.awt.image.ComponentColorModel.getAlpha(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGB(Unknown Source)
	at java.awt.image.BufferedImage.getRGB(Unknown Source)
	at bip.a(SourceFile:111)
	at bip.a(SourceFile:90)
	at bip.a(SourceFile:78)
	at bif.a(SourceFile:45)

-- Resource location being registered --
Details:
	Resource location: minecraft:textures/gui/icons.png
	Texture object class: bif
Stacktrace:
	at bim.a(SourceFile:69)
	at bim.a(SourceFile:37)
	at avo.d(SourceFile:444)
	at avo.a(SourceFile:339)
	at awg.a(SourceFile:274)
	at avn.a(SourceFile:263)

-- Screen render details --
Details:
	Screen name: avn
	Mouse location: Scaled: (233, 173). Absolute: (467, 133)
	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
	at bfe.b(SourceFile:718)
	at atv.S(SourceFile:686)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.6.0_30, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
	Memory: 18666096 bytes (17 MB) / 64868352 bytes (61 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.6.4
	LWJGL: 2.9.0
	OpenGL: AMD Radeon HD 7670M GL version 4.2.11411 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null